The word "mongrel" refers to a mixed breed or mixed-race individual or animal. It is often used to describe something that is a combination of different types or origins. Full definition
The biological and immune systems of mongrel dogs are not overwhelmed by generations of preventative health care. (thedogplace.org)
The whole Fiat Chrysler tie - up is yielding all sorts of mongrel variations on a theme, and the Fiat Viaggio — which Fiat are teasing ahead -LSB-...] (carsuk.net)
Washington's dream was to produce «a superior dog, one that had speed, scent and brains» not a mangy rabies infected mongrel with a fake sob story attached to it. (katharinedokken.com)